If you plan on running a metal head gasket, you will need to have a machine shop machine the head gasket mounting surfaces of both the block and head. This is so that the mhg has a smooth mounting surface and will be less likely to blow again in the near future. Because machining the head and block will remove material from both of them, your compression ratio will change without the proper sized head gasket.
Long story short, can't buy a mhg until you know how much the machine shop removed from your head and block, as you will add the amount removed to the thickness of your gasket.
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1989 7MGTE R154 Targa Top White Package w/Blue Interior
Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels
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