Hey
I got a old liqumatic goped from a garage sale and have changed the engine to a
SK27RC with a Sikk Pipe and filter kit. What should i buy next for more performance??????????????????

Thats a very fast setup. You could look at the spindle size. The smaller the spindle the faster the take off,the larger the more top speed you will get but will lose some bottom end.
DEREK

I have already a couple of spindles like .580, .700, .800

What other things should i get?????

Nick

Short of going to an engine builder, you have done pretty much all you can do to your motor. Your options are to go to a professional engine builder or to get a bigger motor.