ones a Cut Price chassis (the one thats together in the corner) that i have built up with a clone engine with a walbro pz22 carbrettor, but being a small engine machinec, i come across alot off sortable engines for these karts, so soon ill be chucking in a 18hp vtwin briggs on here. the other ones a italian 2 stroke chassis that im modifing to fit a 4 stroke engine, still havnt decided on a engine for it might put the clone in it yet .