I have a 1991 Caprice with a stock TBI 305. My nephew has a 1970 Nova which currently has a 1988 Camaro TPI 305. My question is, would I be able to straight swap all of my ancillaries (including intake and TBI) over to this engine and drop it into the Caprice?

 

Should be no problem. Check the rear seal area to mane sure both are 1 piece type rear seals and press on. The other issue is the bolt pattern on the front of the cylinder heads. Yours has a serpentine belt and a specific bolt pattern for that. Make sure His has the same bolt pattern for mounting accessories.