Long story short, doing a ultra budget build on a 8v and trying to save money anywhere I can so went to the wreckers and picked up all the parts to update the valve train. Got p.t. lifters 3.3L springs and gm3100 retainers, when I pulled the retainers I noticed the 3100 springs are very similar to the 3.3L spring so I grabbed them also. When I got home I used my spring checker to test the springs and see where they're at. The 3100 springs showed considerable better numbers over stock and 3.3L springs and it also looks like they are ovate springs. The only problem I found is the I.D. of the 3100 spring is to small to fit over the guide boss. So what I wanna know is if I were to remove enough material plus a bit of clearance off the guide boss to fit the 3100 spring would it be safe?