i just bought some pacesetter long tubes for my 97 t/a. how hard will they be to install? we will be doing it at a freinds shop so getting the car up high enough wont be a problem. also how bad will it be to run open headers for awhile? will it slow the car down from not having enough backpressure or will i see some gains? if so how much of a gain will they make mph and et wise

 

open headers is gonna be painfully loud!!

you will probably notice some drop in low end...

 

they are pretty easy to install if you don't have any stubborn bolts.