Was wondering if anyone has heard of any 440 cubers that have been modified but kept there original appearance.A buddy of mine wants to keep his r/t stock looking but wants more grunt,ive tried to talk him into intake upgrades but no avail,so has anyone got any real reults,he will put decent exhaust and headers and internal mods but it has to look stock otherwise..thanks  

What stock parts does he plan on using ? Carb and intake ?  Does it need to sound stock ?  The last 340 I built looked pretty much stock to most people. It had a old LD340 intake with the logo ground off and painted blue, I modified Thermoquad and a set of TTI headers. It made 480hp on the dyno, ported heads, 11:1 compression, roller rockers and a huge solid cam. It sure didnt sound stock.

The car Im building now will looks stock right down to the factory manifolds and idle like a stock 340.

I see no reason he wouldnt be able to make 400+ hp with the stock iron intake, some port matching and a good cam.  Headers will help.  If the car had a Carter AFB or AVS a Edelbrock AVS 800 with the sticker peeled off will look stock to most people.

Your friend may enjoy the FAST racing series. These cars look and sound 100% stock and run as fast as 10s in the 1/4

http://www.runboard.com/bfastracingmessageboard