Im.replacong throttle.body and all I find is 70mm so I know I miss match intake manifold which is fine but is 70mm overall on an old stock 93 or will it be good to go

Side not I had idle surges and replaced FITV, PCV, IACV and TBS tried to make adjustments as none of these parts solved the surges but after the Thtotrle.body position sensor I have really high idle so I tried to adjust and .ay have broke **** so I'm saying I will just replace the whole throttlebody and intake at this point ....open to any ideas and suggestions Thanks