Well change to a better engine a pullstart one if you find that more convenient. The car is design to fit one. Set the rear softer or with more droop if it oversteer or too twitchy. I have 50wt shock oil all round. Use 10000 diff oil front and 3000 rear. Medium swaybars, v-one shocks if you want more convenient adjustments but the stock ones are fine and get universal for the front drive. Position your batteries as far to centreline and towards the back as possible use foam to make them stay. Use a fuel filter, the tank doesnt have one. This car performs well for me no need to change. Good luck.