I've been looking into the xlr8 non res exhaust for a very long time for my 08 type s and been saving up money, but recently our Canadian dollar fell so much it means i have to shell out an extra $300 possibly...

So i thought of doing a stage 4 complete straight pipe as of for now and maybe get it the summer or next year, but i have a few questions first:

1) how much in demand are stock type s exhausts if i ever decide to get an aftermarket exhaust and sell my stock exhaust?

2) if they are in demand am i going to "ruin" the value by removing the mid muffler and resonator?