Tbh now knowing you still have to cut the uprights I will not do this it DOES make te top right hand side of the bumper less rigid as thee is nothing linking the main section of the bumper to the top.
And for high speeds and track days that less than ideal.
keV is there a link to your project thread ?
No mate, kinda went off track!! There is on Rensport.co.uk, you on there?