shimming lifters?

Godspeed

88 supra turbo 5spd
May 13, 2005
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Asheville n.c.
how would you go about doing this? the previous owner came by and signed the title for my 86.5 today and he informed me that when they rebuilt the engine they didnt shim the lifters how do i do it and would that cause the ks code?:3d_frown: