Re: ks 150 kasea
If you are talking about the KS Kasea line, they are the 4 stroke models that are about the size of the Skyhawk. They have dual front a-arms and a rear disc brake.
Carter Bros sells the same model and I beleive it is also marketed by a couple of other makers. It is not make by SMC and, if I recall, it is made in China. The plastic is not anything to write home about. BUT, if you want a 4 stroke auto, it has a fairly large motor for a small machine. For non-race apps, it is probably a good deal if you get a good price.
I would change the exhaust tip, change the carb and make some minor trans upgrades straight away.