jet kit???.. but any ways if you want more power for under 300 you could get a fmf powerbomb header, or . i bigger piston wisco piston kit, diffrent cams but if you go with stuff like that then a oil cooler would be a must have for keep that bitch cool
Cam and piston would be what i would buy, I have a cam and piston in mine and ive had no need for an oil cooler yet. Just as long as you dont go to extreme, a JE 10.75:1 piston would cost about 150 and a cam after core charge about 150. So for 300 you could get both, or just a cam or something.