the swap is quite common actually and there are many step by step online illustrations for the swap available. the sr20det swap is not so common but ZFEVER in tampa had one and it was sick.but IMO not worth the $$

honestly you should order a JSPEC turbo front clip and save yourself some $ and time. boosted miata's are very very peppy and if your looking for straight line throw a small wet shot in there on top of it.