Flip top cap on a dart
@4mulaSvaliant makes an adaptor that lets you bolt a flip top cap straight onto the original location. His thread is here, although it's closed for replies. I'm sure you could send him a PM, or contact him through his website. The ORIGINAL Flip Top Cap Adapter - FlipTopCapAdapter.com . No bodywork required that way. Fuel spillage is a problem in either location anyway.
I have one on my Duster, he has more pictures of other cars on his website
@4mulaSvaliant makes an adaptor that lets you bolt a flip top cap straight onto the original location. His thread is here, although it's closed for replies. I'm sure you could send him a PM, or contact him through his website. The ORIGINAL Flip Top Cap Adapter - FlipTopCapAdapter.com . No bodywork required that way. Fuel spillage is a problem in either location anyway.
I have one on my Duster, he has more pictures of other cars on his website