Tires

All, I'm in need of new tires on my 71 340 Duster (I'm the original owner). I like the Goodrich radial TA's but after reading all the reviews about how the letters turn brown, I'm hesitant. Today I found a aftermarket website that sells the White-lettered Goodyear Polyglas tires, HOWEVER, they're "radial" tires made to "look like" the original polyglas!!. Does anyone out there have these now or know of anyone who has them and if so, what has been their experience with them. The polyglas (bias) tires came from the factory on my Duster and since I'm hesitant to pay for white letters that turn brown in short time, I'd like to go with the "original look". They're quite pricey though, $299.99 a piece, plus shipping. Sure would appreciate any comments, thanks !!!!!