as far as the 22R all of the transmissions in these early trucks will bolt to both the 20R and the 22R
the big HOT ticket is to use a early 22R block under your 20R intake and head, ive run one and its a AWESOME engine, i broke my speedo cable 3 times while running that engine over the course of 2 years when i finally dropped a valve at 7200 rpm
i cried for 3 days
