Mopar in a Mustang ...

Boss 429 is a different series 390 is an FE and the 429-460 were "385" I think, not to mention the boss heads are a ton bigger.

this.
-yeah, the '68 1/2 came with the 390, but as ink said. the Boss isn't a 390:)
Like I said earlier, even the '69-'70 model required massive mods to get the B429 into it (and the shock tower area was already wider on the 428CJ cars that Kar Kraft started with).

anyway, sorry for the interruption, back to the a-body goodness:toothy7: