Your exhaust setup is totally different than the our generation. Please post this question in the 87-91 forum, where people will be more familiar with your application.

i dont mean to start and aguments or anything im just wondering will i lose any low end power and it the flowmaster 80 a direct swap? is it bigger or longer or will i have to do any modificantion to make it fit ill be doing this in the spring along with headman exhaust tips.