Where do I buy these diet pills for my car? Options

[moggy]

As some of you may know I rally a 914 over here in the UK. Mainly against Ford Escorts. Now I always knew that I was down 50bhp to the Escorts but I always thought I was lighter. At the previous rally my car, along with all other competitors, were weighed. My car came in 1010kg, with a full tank of fuel, driver and co-drivr were not in th car. The Escorts were all about the same.

So..... how do some of you guys get so light?

Here's what I've already done to save weight:

Lexan windows, side and back
F/glass boot and bonnet
All grill engine lid
Removed heat shield above exhaust
Stripped out interior including all sound deadening and tar
Late doors but with the crash bar cut out.

Here's what is fighting against the weight savings:

Skid plates front and rear
Front oil cooler and oil lines to it.
Roll cage
Engmann long kit
CFR rear suspension mount reinforcement kit

So.... alot of you guys have the additional weight of the above e.g. rollcage, rear suspension reinforcements etc. How do you get the car below 1000kg? what am I missing???