Hello Tom,
I can offer you Mirce Finish Set for 1/6 scale, which have 1,2 mm wide panel lines, 1,6 mm diameter rivets, and 2,5; 3 and 3,5 mm diameter dummy screws.
Size of Detail set for Hellcat can be reduced on 1/6 scale too...
Also Paint masc for stars and bars can be made for your model.
Prices are same like on my web site, and if you want to buy all sets I will give you 10% discount. Postage to USA is 10,00$
For more information check my web site:
www.nsmodelers.rs
Thank you in advance...
All the best
Mirce