Quick Question on Rear Shocks 1st Gen

I have a 99 Prerunner 2wd, stock rear suspension my stock shocks have 168K miles and are blown and they suck. So i got someone with a great deal on two new rears for $40 for both. Since im a unemployed student right now this is a great deal for me, or else id get some 5100's . Problem is that the pair of shocks are the same length and they are the Passenger rears rights 21.5 length i know that the left and the right are diffrent sizes,and the drivers side is 20.3 length extended. But is it ok to run a slightly longer shock on the left drivers side? Should be. About one inch and a half or smaller.
Need a quick reply thanks.

 

itll be fine

 

AWESOME!

 

thanks...hookers and blow?

 

Huh?