I ordered a Toyota Supra Long block from JIS for my 1987 Supra. The gasket set was imcomplete and of poor quality. One of the front threads on the block was stripped and I had to replace with a helicoil. After less than a year the head gasket blew. I removed the engine and rebuilt it. During the rebuild I found that the pistons were not new like they said when I bought it. I called them and they confirmed they didn't put in new pistons but didn't provide any credit. Next time I will use a machine shop I know and purchase the parts myself. JIS gaskets are bad and they aren't honest.
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