I have a 12lb Hays aluminum flywheel on my 350 Nova that just isnt cutting it. Im concidering selling it and purchasing a billet steel flywheel for a bit more bottom end on the street and off the line at the track. What weight flywheel should i be looking for? 25lbs? 30lbs? 35lbs? Im just not sure. The car shifts at 6,800-7,000RPM and is street driven most of the time. any help would be great, thanks...