if you have the cash, buy the msd stuff. I put the msd, 6al, billet dist, blaster coil,and firewire plug wires(which are awesome) and noticed a world of a differnce, the msd does not drop off spark in the upper rpms where the stock ignition cant keep up, adding more top end power and cleaner running lower speeds with smooth accell.. do it and be done, no drawbacks.