im trying to figure out which spark plug wires are which for the right side of the engine by the drivers side, is there any way to tell the number by the length ?

 

The easiest way is to pull the old wire and hold it next to a new one. Due to the location of the Opti and the way the wires are run, both sides should be about the same.

 

i already have new msd spark plug wires in but i just replaced the optispark and the wires on the left side are labeled 2,8,6,4 but the left side wires arent labeled at all so i dont know what wire goes where on the opti

 

Optispark spark plug wire connections, looking at front of car, from top to bottom of distributor cap

Right (passenger) side: 4(B), 6(C), 8(D), 2(A)
Left (driver) side: 5(G), 3(F), 7(H), 1(E)

If you don't know where the wires are going and they are not labeled, you will have to physically trace them, there is no other way.
Odd numbered cylynders are on the driver side, front to back 1, 3, 5, 7
Even numbered cylinders are on the passenger side, front to back 2, 4, 6, 8

 

ok thanks i really appreciate it i think i got it right, sounds a lot better now, i will have to test it out tomarrow to make sure