you gotta consider man you throw a v6 inna protege youll have problems with weight in the front so your handling would be off youd have to do a lot more to the car if you did an engine swap its more logical to supercharge and build da engine you can always get a boost controller your gettin a fully built engine itll handle more than 10psi hopefully.....theres a lot more tho that youd need to take into consideration when we meet up we'll talk cars imma mechanic dude i do all my own work on my mazda that green bitch has been trouble lol but ya man put more thought into it