67 barracuda 62,000 original

Hey good site.I live in B.C. canada and just purchased 67 barrracuda off orig owners son with only 62,000 miles.It has the slant 6 in it and after alot of thought I will keep it original mostly.There is only some rust on the rear quarters ,the rest of the cars body and under carrage is incredible shape.So I'm replacing the quarter skins and trunk extentions as well.Before I decide to keep it slant 6 want to see if numbers match on engine,can some one help with this as the #s on the intake side dont seem to match the vin or is there #s somewhere else ? Also want to buy aftermarket rally rims from Year One and they have several widths and offsets.Can enyone inform me the widest rim for this car that will have no clearance issues.also looking for mint trunk lid trim not large center peice but the 2 narrow peices ,and grill outer surrounds.any help would be cool thanks.