5.3L swap question

[Tylerz181500]

Im not saying an exact combo but the junkyard round here any motor is 250 any trans is 125 so whatever i find i fine, i know i can run any of them behind one another.

as far as older tranny i know alot of my fbody buddys would run their 6.0s and a th400 behind it never inquired what they did for vss but a manual tune may be a great idea to compensate and then figure out lockup, or like i said automatically run an 80e and figure something else out.

ive been looking into lswiringharnesses.com as well thanks for the reassurance on that one.

as for the motor mounts, is it just a plate that bolts to the block and adds location of the pad style mount that came on these truck with v8's?