which lowering blocks should I use?

well I just had to blow my airbag money on a new furnace. I guess its $2000 well spent but now I cant get my bags done for probably another year. so I want to block it for the summer ...any ideas? who makes a good block?

Don't pull the overload spring. Just get the 4" blocks. It'll probably be lower that way anyways.

I pull pulled my over load spring and put in a 4" angled block and drove it like that for a good year when I first bought my truck. I had drop shocks too of course and the front had 2" drop spindles and 3" drop springs. Hell it worked for me until I bagged it.

if your going that low notch the frame or your frame will be sitting on your axle. because pulling the leave probably gave you like a 3'' drop and if you add another 4'' drop to that your frame will for shore be sitting on your axle

Use Belltech 3" blocks, unless you are going to notch the frame. I left the overload spring and just pulled the same one you did, with 3" blocks. The spring got me 2" so I am 5" lower and the axle to frame clearance is a about 1.5" I put in airjacker shocks so I could haul my motorcycle, without them, the driveshaft was scraping on the crossmember at the back of the cab. The ride up front is much better now that I have 2" spindles, but now instead of hitting bumpstop in the front, I hit fenderwell with my 14" tires. There wasn't enough room in the back to leave the bumpstops, so when it hits, it hurts. Check out the pics on my profile.

dont waste your money on blocks you aren't going to be happy with the ride quality you get from them. by pulling a leaf your ride quality is coompromised and if you drop it dramatically by pulling a leaf and blockin it you run a good chance of having that axle hit your frame with out a notch. best advice cuz i learned it the hard way save your time and money up and bag your yota when you can