Adding a riser block

Recently bought a 1990 Tacoma and noticed the rear springs were sagged out. Had the local shop replace the rear leaf packs and bushings and noticed after that the rear of the truck was 1" lower than the front. I want to add a 1" riser block and install new shocks. Looks like the U bolts might be long enough but I'm not sure if the stock length shock will work.
Any advice would be great.

 

i put a 1 1/4 block in my 2012 and that required new longer u bolts but im kinda kicking my self for not going the add a leaf route . toyota in lloydminster has some toytec stuff in stock and can get what u need from them .