CSR Performance Products Scattershield Clearance Issues

Hey all, sorry for another question. As I stated in my previous post, I'm putting together a '69 Dart big block Dart bracket race car. The car has a CSR Performance Products Scattershield. I installed the engine and trans combined from underneath for the initial install and was able to make it work. Fast forward to the first start of the new engine. Once I put the car in gear, I got a leak out of the bellhousing. Awesome, so now the trans has to come back out. I'm curious if anyone has successfully removed the trans only or does the combined motor/trans have to come back out? The top two bolts are the hex cap screws from the CSR kit so I'm not sure how to remove. Can't get a hex key from above because not enough clearance between bellhousing and firewall. Not sure if I can access from the underneath or if I have to cut access holes in the firewall. Any advice would be helpful.

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