maxx 2.5 - 3.3 compatibility question

[schofield]

i am trying to put 3.3 shafts on 2.5 arms and knuckles. am i kidding my self?
3 points of conflict i have found.

1. the shaft slightly rubs the shock mounts on the arms.
2. i had to use washers to make up the width difference between the 3.3 ball connecters and the 2.5 wheel shafts.
3. slight rubbing on the upper 2.5 arm from the 3.3 shaft.

all can be remedied with a little dremmeling. but im not sure i will be able to get the nuts on the back side of the shock mounting screw. i could i guess run the screw the other way and use the nut to hold the shock on.

motors will probably 700ho's or 775 dewalt motors, probably not brushless as i would need a new raido. and i would like to run A123's but again no budget so she will probable be a roller for quite a while.

or should i just use my 2.5 shafts till i can afford 3.3 knuckles / arms/ wheel shafts / connecting rods, (could be years)

any ideas, i have no budget just what i have on hand, some budget but not till next month. (i get a rc allowance from my wife)