So provided I unsieze the F and it's okay.Has anyone done a chevy TBI conversion on an F engine I know the displacement is a little shy for a 4.3 TBI but I've had great success with junkyard fuel injection on 2f's .The last system I built entireley from junkyard parts w/the exception of the adapter plate and the module in the distributor . Works great I get about 15mpg and it passed emmisions with no cat . Tried a search already couldn't find any info.