Now I am a little confused, and am running around in circles on the interweb trying to find the info I need; but what are your thoughts on this as far as bolt patterns go for the bell housing and marrying of the transmission etc?
I am open to any proactive suggestions, good or bad

I have a very sharp quote over the phone from a business who has plenty of experience in this field to do the job.
My truck at present has a Isuzu 3.1 intercooler top mounted and they suggested it will not be a problem keeping this as existing.
I hope to get to visit them early next week for a one on one meeting.
The quoted cost of this is way cheaper than even considering selling the truck and starting again.