'70 Dart 392 Project; what direction?

I have a set on my 6.1 with an alterkation. I had to modify the drivers side mount to get it to clear. With that you can use a 5.7 manual trans oem truck starter which tucks up against the block tightly
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Looks like those are the factory SRT8 Jeep manifolds? They look great. For the drivers side mount, did you have to cut and reweld or just clearance?

Also, were you able to use the factory oil pan?? Looks like it in that picture... $450 for the holley cast pan is a tough pill to swallow.

Thank you!

Mike