diff --git a/.gitignore b/.gitignore
index 0d32122..2a3a1a2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -165,3 +165,4 @@ cython_debug/
 # Generated files
 /pydra/tasks/ants/_version.py
 /pydra/tasks/ants/auto
+/pydra/tasks/ants/nipype_ports
diff --git a/nipype-auto-conv/specs/classes/nipype.interfaces.ants.base.Info.yaml b/nipype-auto-conv/specs/classes/nipype.interfaces.ants.base.Info.yaml
new file mode 100644
index 0000000..0979499
--- /dev/null
+++ b/nipype-auto-conv/specs/classes/nipype.interfaces.ants.base.Info.yaml
@@ -0,0 +1,11 @@
+# name of the converted workflow constructor function
+name: Info
+# name of the nipype workflow constructor
+nipype_name: Info
+# name of the nipype module the function is found within, e.g. mriqc.workflows.anatomical.base
+nipype_module: nipype.interfaces.ants.base
+# the names of the nested interfaces that are defined in other modules and need to be imported
+external_nested_interfaces: null
+# a list of tuples where the first element is a regular expression to find in the code and the second
+# element is the replacement string
+find_replace: null
diff --git a/nipype-auto-conv/specs/classes/nipype.interfaces.base.core.PackageInfo.yaml b/nipype-auto-conv/specs/classes/nipype.interfaces.base.core.PackageInfo.yaml
new file mode 100644
index 0000000..818a558
--- /dev/null
+++ b/nipype-auto-conv/specs/classes/nipype.interfaces.base.core.PackageInfo.yaml
@@ -0,0 +1,20 @@
+# name of the converted workflow constructor function
+name: PackageInfo
+# name of the nipype workflow constructor
+nipype_name: PackageInfo
+# name of the nipype module the function is found within, e.g. mriqc.workflows.anatomical.base
+nipype_module: nipype.interfaces.base.core
+# the names of the nested interfaces that are defined in other modules and need to be imported
+external_nested_interfaces: null
+# a list of tuples where the first element is a regular expression to find in the code and the second
+# element is the replacement string
+find_replace:
+  - ["import logging", "import logging\\nimport subprocess as sp"]
+  - [
+      "\\n(\\s+)clout = CommandLine\\(\\s*command=([^,]+).+?\\).run\\(\\)",
+      "\\n\\1raw_info = sp.check_output(\\2, shell=True).decode('utf-8')",
+    ]
+  - ["raw_info = clout\\.runtime\\.stdout", ""]
+imports:
+  - module: subprocess
+    alias: sp
diff --git a/pydra/tasks/ants/base.py b/pydra/tasks/ants/base.py
new file mode 100644
index 0000000..f2040cd
--- /dev/null
+++ b/pydra/tasks/ants/base.py
@@ -0,0 +1,35 @@
+import logging
+import os
+from packaging.version import Version, parse
+
+
+logger = logging.getLogger(__name__)
+
+
+class Info(PackageInfo):
+    version_cmd = (
+        os.path.join(os.getenv("ANTSPATH", ""), "antsRegistration") + " --version"
+    )
+
+    @staticmethod
+    def parse_version(raw_info):
+        for line in raw_info.splitlines():
+            if line.startswith("ANTs Version: "):
+                v_string = line.split()[2]
+                break
+        else:
+            return None
+
+        # -githash may or may not be appended
+        v_string = v_string.split("-")[0]
+
+        version = parse(v_string)
+
+        # Known mislabeled versions
+        if version.is_postrelease:
+            if version.base_version == "2.1.0" and version.post >= 789:
+                return "2.2.0"
+
+        # Unless we know of a specific reason to re-version, we will
+        # treat the base version (before pre/post/dev) as authoritative
+        return version.base_version