"Thomas Cameron" > wrote
>I've heard that the 351C/351W is a
> drop-in for this car.

I'd stick with a W. C's arew hard to find in decent condition and the W was
made longer and has ALL the upgrades from a 5.0 except the intake. This all
equals saved $$$

> I've also heard that a bigger (390, 429 and 460)
> motor requires modification like moving the shock towers up front.

Who's the 'tard that told you that?

> Is that true?

NO!!!

> How big a motor can I just drop in?

How bout this???
http://www.rpmmachine.com/ford-460-557-stroker.shtml
557 cid 460 stroker. OUCH!!
--
Scott W.
'66 Mustang HCS 289
'68 Ranchero 500 302
'69 Mustang Sportsroof 351W
ThunderSnake #57