Any more updates Jordan? I am also currently doing a 4age conversion into an RT40 Corona. Mine will be a turbocharged 4age using a 4a-gze bottom end, supra gearbox, nite-parts bellhousing and either a ford 9inch or hilux diff. Do you have any more info on the subframe modifications required to fit the 4age? more photos, etc?
I purchased my RT40 from a mate who had it sitting in his backyard, minimal rust, and the 2R still purrs nicely! 4 speed coloumn shift.......
Building it as a weekend-er and occasional drag car.
Good luck with your build, it is good to see others doing the same conversion.
Cheers,
Dan