sports exhaust is a must, so is motolita wheel/boss, my car has door handles but I rarely use them, you will neeed a luggage rack if you intend touring, I don't leave mine on permanently. I have no knowledge of induction kit. small interior mirror is essential and a clock and door pockets would be handy, Defendall film on front wheel arches saves paint from stone chips.
I'd agree totally with all that- especially the sports exhaust- not only for sound effects but more importantly for performance and free-er revving. My car has a Zetec not a Sigma engine so my concerns where slightly different but I also fitted a 200 cell cat to replace the OEM 400 unit. ( I did try a 100 cell unit but it was problematic when I came to the emissions aspects of the MOT)
The induction kit is more complex- not least because of the packaging issues under the Morgan bonnet and all sorts of associated questions about where to site it to get best results in terms of cool dense air. The length of the runner and how it mjight shift performance up and down the rev band also has to be factored in.
This has cropped up on a number of threads on TM so there is plenty of comment
A fianl point ( which I admit is a bit 'nit-picking) is that a number of people ( Brian 'Aeroman' for example,) have raised the issue of the rear axle ratio on the Sport. If you think this might be a problem, it is good to be aware that changing it can be a bit pricey.
Regards,
G