70 Plymouth Duster aka the sickness

Hello mopar friends.
Looking for some help. I can’t find the thread it was on.
I am build a 70 duster with a 6.1 hemi/ nag 1 swap.
My starter is on the right hand side
I read in a previous thread. The idler arm will hit the starter.( can’t find the thread). But the problem was solved with a spacer for the starter. And a new shaft for the starter drive.
I am using the original k member and holly mounts as it moves the engine forward an inch and a bit.
Or has someone else done this Any help on this would be greatly appreciated