The biggest of the BIG BORE KITS that can be installed without cutting the case or heads. Increase the displacement of your 1500 or 1600cc VW engine. Now you can have a super-powered VW without the cost or inconvenience normally associated with Big Bore Kits. Check these features against any Big Bore Kit on the market today. Bolts right into any 1500 or 1600cc VW Engine without machine work. Our High Performance 87mm kit can be used on 1300cc engines with minor machining on the cylinder heads.