that turbo kit looks great, but you have to consider that the turbo your looking at flows alot more than a t25 or a 14b, thus 4 or 5 psi on the 50trim would be a lot more on the 14b, and if your not changing your pistons and are not running over 5 psi, I would suggest getting a smaller turbo as they spool up a lot sooner and you will get more low end torque, I am in the process of turboing my 93 laser and I chose to change the pistons because it's so risky using stock ones, you have a 420a and the hahn racecraft turbo kit looks to be exactly what you need to run your car safely and to get that extra kick in WOT, just do a search for hahn turbo kit in DSMtalk or DSMtuners forums and you should find what you need. James.