Orange Patriot suspension upgrade

OrangePatriot

Hey gang, I'm hoping someone can help me with this.

I have a 2002 Orange Patriot XC (14" frame) with a RockShox SID XC Lockout.

Since the shock is now 5 years old, I'm thinking I should be able to improve on its performance for not much $$$. The shock still works ok but it's certainly not impervious to pedal-induced bob, and to be honest, reaching down to faff about with the lockout lever is more trouble than it's worth. I guess I'm looking for something a bit more advanced, but I can't afford cutting-edge.

Anyway, my main problem is that I don't know much about shocks and the little bit of research I've done has revealed that there are a multitude of different sizes/lengths available. I have checked Orange's web site and also the original docs that came with my bike, but I have no idea what size/length I need. If anyone knows the reqs for my bike, or how I need to measure the shock I have, it'd be much appreciated.

Also any suggestions for a replacement shock would be great. If you know the bike, you'll know that there's not a lot of room to squeeze the shock into, especially as it's a 14" frame. For this reason I *think* that coils and external chambers are probably out, but if you know otherwise, please let me know!

Thanks for reading, and thanks in advance for any advice!

Oh and I should add that I'm 5ft4, 150lbs, and not into hardcore DH or FR. Too old for that!!