Your car is almost identical to the caprice, which makes it a B body, also shared with pontiac pariessenne? buick park avenue and olds ninety eight(maybe eighty eight) i believe. Finding parts for these cars is very cheap, and easy, there are plenty in junkyards around the U.S. IF you want new exhaust, headers can be found at Jegs.com or summitracing.comand any competent exhaust shop can bend true duals for reasonable prices. What really makes ur car cool theough is that it is emissions exempt(olderthen25 years old) so if you want to put a 454 into it go right ahead. Basically your car is a smogger, very crappy gas mileage with too much emissions equipment and not enough power. Quadrajet carbeurators are very easy to come by and are very cheap to have rebuilt.