Cutting or trimming your shield invalidates the SFI certification – Hence nobody will pass it in real tech inspection (divisional or national meet). Local track inspection maybe – being that they use the better than nothing rule! - You seem to want to re-invent the wheel – the CSR Kevlar shield is a much better way to go and a whole lot safer in the long run – it should fit with a little BFH finesse on the body seam lip in the trans tunnel – Blankets and clunky shields are things of the past since the Kevlar shield came out. Just ask anybody who has exploded a T-Flight and had a kevlar shield to contain it.