a car bellhousing will not mount correctly
37-53 truck bellhousings have the same mounts points and 47 up have the correct bellhousing index
3 options
1. get a 48-53 truck bellhousing and have pedal mounts welded on or buy it from jim carter who buys it from buffalo
2. use an adapter plate. make it yourself, have it made or buy it from buffalo
3 fab your own pedal mounts like rick