
The BLOX Racing LS-to-VTEC conversion kit for B18/B20 swaps includes an 81mm head gasket and is intended to adapt LS engines to VTEC installations as described. It’s presented as a conversion kit to support that specific engine pairing, supplying the stated head gasket size to help complete the mechanical conversion where those dimensions are required.
BLOX Racing LS/VTEC (B18 B20) Conversion Kit - With 81mm Head Gasket