DC2 is right the first gen turbo is a 14b and it is very difficult to find a manifold with the right flange. The only one that might work is the hks manifold since it uses a t-25 turbo and alot of 2nd gen dsm guys will use 1st gen 14bs since they have the same flange. So they key would be to find a manifold that is flanged for a t-25 and use your 14b on it. Anyway 14b will hold more boost with less pressure drop than the t-25 Their exhaust housings are of different size but the flange should be the same.