my slant buildup

If I could find one I could be interested in one of those slant to small block trans adapters down the road. I've considered swapping to a stick to get an overdrive. Another down the road idea is possible OD auto trans.
I'm waiting til I get the engine out,I think I'm going to need a converter for my 727 as I think the ring gear has some munched teeth. Had a B&M I was looking at, til I found out that my particular trans is a lock up version. Which I know isn't working anyway.
Though with my 3.21 gears and tall ish tires I'm on the borderline as to whether an OD would really help me anyway, might take the rpms down too low at cruise.