I will post an update in case anybody's interested.
I have installed my homemade lift kit for the rear of the 4.4 RAV4. It was pretty easy to piece together based on information I found online about other kits for sale.
The spacers I had machined are these:
What I used:
4x spacers, 1'' tall, M14 hole and approx 1.5'' wide
4x grade 8 bolts, M14 x approx 4.25'' long. Fine thread
4x M14 washers, grade 8
4x bigger washers for behind the M14 washers (too small)
Install was fairly simple with hand tools and a floor jack. Remove rear coils, drop subframe, remove stock bolts and reinstall with spacers and new hardware. Here's the final result - front 1.5'' strut spacers (Tema 4x4) and rear homemade 1'' subframe lift:
If anybody has questions feel free to PM me.
Again do this at your own risk, I assume no responsability for anything you do!