360 small block 73 dart

Having troubles with this build I have the 360 fully in running. The transmission is a 318
a904-la model. I used the 360 flex plate balanced for the motor. Attached it to the 318 converter. I now have the bolts hitting the dust cover, I took off the dust cover. Now I believe it is hitting the block somewhere. Need advice on what steps I should take next. Trying to avoid transmission shop in my area. I have called some and most say it cant be done. I believe there is something out there.

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