I got a 90' f150 w/ 302 v8 EFI 5spd. Manual 4x4 that hauls. One of my problems is I have standard headers and y pipe then about a foot after the cat my pipe is cut and has a turndown. In ND it's now illegal to have straits or glasspacks so I'm looking for a strait through muffler >$50 that will keep power and lets out a good low rumble, but doesn't sound wimpy mudding or drag racing(weekend track worrior). What other good power adders could i cram on this motor for >$300?