mazda b2600i help need asap

[#10 Racing]

ok im putting a 2 inch block on the rearend to raise it 2 inches when i do this am i going to need new rear shocks to compinsate for the 2 inches or will the stock ones work. what i have now is the 2 inch blocks and new longer u bolts im hopeing the stock shocks will work because i just replaced them 2 months ago anyways please let me know because im planning on doing this tomorrow morning and the parts store isnt open on sunday.