It all depends on your motor...Has it been taking care off ?....Does it use oil ?

Do a Compression test and Post the numbers...Also do a Leak down... A leak down will tell you how good or bad the rings,valve seals,valves are....Theres no way of knowing the shape of the Bearings and thats the bad part...This motor could have been rebuilt or replaced at any point before you bought it...

Have someone look at it for you....

But if you had the money I would rebuild it...Always better to build the motor to handle boost...Thats my ...

Good luck with your car...