I left mine off as a test (no droop). No real difference but then it's hard to tell without side by side comparison. I'm not sure the differences of metal bumper between N/A and UK but I POR-15'd mine and waxoiled the inside as paint was not going to reach the nooks and crannies unless I dipped it in paint (which I couldn't). Going to do the same to rear bumper possibly this winter.
TR7 Spider - 1978 Spifire - 1976 Spitfire - 1988 Tercel 4X4 - Kali on Integra - 1991 Integra
That may apply to the 'beam' behind the bumper skin but not to the weights in the ends that are part of the 'harmonic damper' designed to eliminate scuttle shake in the DHC.
Alan
Saab 9000 Stg 1
Saab 9000 2.3 FPT Auto
'81 TR7 DHC
I fitted a FHC bumper (USA spec) to mine. Also surgicaly removed, with an acetelene torch, some additional weight from the reinf beam. Much lighter and no droop whatsoever. If only it were as easy with my belly!![;)]
Jim Underwood
72 MGB BRG
80 TR8 Persian Aqua
If women don't find you handsome, they should at least find you handy.