Interesting choice for a 350, when it would have come with an 351M or 400 using the big pattern bellhousing.
That's where I was going. Inquiring as to which transmission you were using.
But, fortunately it's already done!
Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.