I would initiate a 'item not as described' claim with Ebay. Seller ought to make it right.

I doubt Ebay will do anything for you; my neighbor buys and sells things there all the time and anytime he's had a buyer try to screw him over Ebay refuses to do anything in 9 out of 10 instances.

Sounds like a clear case of "not as described" which ebay supports the buyer most every time. The only inconvenience you should incur is the time and effort it takes you to send it back. Return shipping should be the seller's responsibility. He'd be wise to return a portion, enough to make you feel good doing the repairs.
As a seller, I've been dinged a couple times on much less and have learned to NOT sell any item on ebay anything that could be interpreted as "not as described".

12bolt
 

Only problem after thinking about it .It was on ebay when I seen it but he wanted to do the sale outside of ebay . To avoid fees .

This is exactly the red flag you should have caught. If you paid with paypal, you're still covered. That is, if you paid as a purchase, not f&f.

12 bolt
 

I trusted him.

Tom's Differentials has high quality Camaro spring perches. I'd recommend getting a set from him and have it done right. Just be warned, all of this cutting and welding on the axle tubes has surely caused them to warp. This can be fixed by someone who knows how to do it. I've fixed several of them. The spring perches that are sold by Moser are not very good quality. You have to be careful where you get them.

Did you pay him through PayPal with a credit card? If you did you have recourse.

- Warren

12bolt
 

Paid him with a bank wire transfer

I agree