clip question

[JELLY]

I bought my truck with a ifs front clip already installed which saves me work. The problem is i was told it was a '77 or '78 monte carlo and those two years are supposed to be different and i wanted to buy drop spindles and a bag kit if made for it. Does anyone know how to tell the difference?

Also, the rearend is from a monte carlo and i think i am going to use the factory triangulated 4-link mounts on the top of the pumpkin. i would like to know the length of the links eye to eye so i have a starting point. i will make the top links as long as possible then add the same length to the bottom.

Sorry for rambling! Just had elbow surgery and i'm getting stir crazy sitting here. Build thread coming soon! Thanks!