Forgive me if I'm way off the mark (& coming from a Jap superbike background) but isn't it cheaper to buy (& quicker to swap over) a single seat unit than a cowl (lights & latch included in timings)?
- look neater too.
If I've got it wrong then I have 2 bip seat units in my cellar & have had both a colour impreg. Ducati race single seater (from my stolen 996) & now an MV unit to swap over, each colour matched and cost a lot less than £150.