I personally think that there is too much sculpting on the door panels. I, too, am not big on flames. Anyhow, If you went full custom, I would consider custom seats that would match the panels in some way. One imortant element to design is whether or not something looks like it should be there, as opposed to something sticking out like a sore thumb.
Good luck

 

See i think the door pannels were the blandest part of the car well that and the stock seats i want something that pops!

 

onegreedy- If you want POP, just go all the way with your custom! Be careful cuz POP gets gaudy real quick. I think having a general "concept" for a custom (non-custom) car is a good idea- in your case you want POP as your concept! Go get 'em!

 

+300 on the kick panels...but the flames would look kinda queer