You can get by without the spring compressor, but it's really not trouble at all and made the whole process a lot easier for me. I read that link and started to do it without, but in the end I'm glad I got the spring compressors. I don't see what the big deal is. Didn't cost me a dime to rent them, and definitley didn't hurt anything by using them. I think they helped out, but some seemed dead set on installing without them. so to each his own, but as for me, I'll be using them.