1968 c10 switching from sbc to bbc

[1968chevyfever]

I'm getting all my parts together to swap my 1968 c10 2wd pickup from a 350 sbc to a bbc 427. Currently the truck is running a borg warner super t10 four speed, a one piece driveshaft and a 12 bolt posi rearend out back. I'm using sbc side motor mounts, bellhousing mounts and a rear transmission tubular crossmember. What kind of bbc frame towers and motor mounts should I look into getting? Do I need to stay with stock mounts, to keep my bellhousing mounts? Could I go with aftermarket tubular mounts or would it move the engine too far forward to retain the bellhousing mounts? I've tried to search on here for previous threads, but the search function is disabled. Any help would be greatly appreciated!