My WRX300 has a prodrive spoiler and acted like a guillotine so it needed improving, the uprated torsion springs are expensive and need fitting, but for £20 I got two heavy duty springs, drilled two holes and moved my spoiler brake light cable. the boot now closes well if released from almost open and with out the posibility of removing fingers. The boot can also be lifted with one finger.

Century Spring Corp 1.06" x 7" x 0.105"

 

Great bit of engineering.

 

Aye, good idea!

 

The spring rods and mountings on mine have broken, that looks a great fix!