vicksrods

hi all new here to this forum and new to Ls engines. I hyave 55 chevy im working on for a cuxtomer it has an LS1 in it and a stand alone engine management wiring harness, I'm looking for someone that makes a spacer for the Tstat housing i need to be aqble to install a couple of more 3/8 thread temp sensors, any info is greatky appreciated.