Hi all, I love my 77 NYB I take it everywhere all over New England. Has about 80,000 miles. I have dual 2.5 inch exhaust on it. Looking for more of a punch from the 440. Obviously reliability is a must for me on long road trips but she just seems to fall flat on her face. Looking for some performance upgrades. The lean burn is gone. What should I be looking at to install? Thanks in advance!