Budget 340 Upgrades

Will building a stroker out of the original block hurt the value? It could always be put back to stock if you wanted to. The car is very cool all original, sunroof convertriple, hood scoop, stripes. It sat outside under a cover and needs paint bumpers rechromed and stuff is a little oxidized. Its a driver I want a car that I can use with out freaking out about it. I'd like to be at about 400hp.

400HP is easy with a 340 , mine is basically stock , holley street avenger , Air gap , mahle 10.5 forged pistons light porting of stock heads making 398 hp 413 tq and a comp cam . Now going with Edelbrock Alu heads and crane 1.6 rockers . It's a spare 340 , the original is sitting in my garage .
With a stroker 360 or 340 400++ hp is easy . I would not stroke the numbers matching 340 , put it aside and build another 340 , or the cheaper route a 360 .