Im in the "planning" stages of a mild build for my 77 LTD II. Nothing insane...but would like more punch from redlight to redlight. Right now the car is not running, and hasent since 2007. Its got the stock 351W/FMX trans, it jumped time and destroyed the heads. I really want to next spring/summer (if my shop gets done) to begin resurecting the ol gal. Ive gone around and around in my head if i want to.. A- Rebuild the 351W with a mild cam, intake/4bbl, headers, you know, the normal. B- Buy a already running 351W and just drop in, preferably a mid 80s H.O from a truck/Econoline C- Buy a 400 core and rebuild it, with a cam, intake, headers, possibly heads, etc etc. Now, i know obviously the 400 would require the biggest expense, time and money wise, but perhaps offer the largest reward. Im a torque junky and its hard to argue with that big ol 4 inch stroke...if i did go this route i should be able to just buy a set of 400 motormounts for an LTD II, and buy a big block bell for my FMX correct? What about header clearence? Rebuilding/building the current 351W seems like a good middle ground...but i feel like ill always wonder "what if" if i dont go for the 400... The 351 H.O is considerably stronger then the late 70s 2bbl version, would also be the quickest and eaisest way to get it running, but its always a crapshoot with junkyard motors. Keep in mind i also have a 3.31 3rd member for the 9 inch in back to replace the 2.50 airplane gears (who needs to run 80 in 2nd?) Also...before anyone brings up a 429/460, ive avoiding these for a couple reasons...ive had trucks with the 460 and while total powerhouses...both were iffy on reliabilty, and junkyard 460s arnt exactly cheap. I also want to keep the car original...and the 400 was an original engine offering, and ive had several 400 trucks that all treated me very, very well. Sorry for the long winded post...but this has been bugging me for a while, and im getting close to the position where i can start making it happen. Thanks in advance!