Hola Everyone, my first post!!!

So i purchased a set of zz4 d-port headers used from another fella, and the part number he gave me referenced a set of oval port headers on summit that i knew would fit. So my question is, will these headers- http://www.ecklers.com/product.asp?pf%5Fid=43505&dept%5Fid=1261
match up to the exhaust ports on my L-48 Engine??

Need to know ASAP so i can know if i can start removing my stock exhaust.

Thanks in advance folks,
Chad