77 Dodge Class C motorhome engine removal

Daughter and I got the 318 and 4 speed out today....went pretty good...did not even have to take the hood off...
Getting the shifter off was interesting had to go to youtube to see how...

So some more clean up in engine bay......and later this week we will start to but the 360/727 into it...

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Looks good. Why 727 for it?