500 hp 360 ??

Went to an engine builder with a machine shop today. He told me he could build me a 360 with tight to 500 hp. Probably 485-490 for $4500 if I supplied the core. All parts baked, blasted and magnafluxed. Stock cast crank (shotpeened), stock rods redone (told me 360 rods are awesome), rotating assembly balanced to within a half a gram, a flat tappet .500+ lift comp cam with hydraulic lifters, crane roller rockers, kb pistons .030 (bored and honed with a torque plate), stock heads ported and polished. What do you think?? He's been building engines for 29 years and has a very good reputation. Likes to build Chryslers and make the bowtie boys cringe he said. Used to race Mopars. He said he loves the 360's potential and said the bottom end on them was far far superior to a Chevy. Told me I could run 7000 rpm all day but the power is going to top out at about 6300-6500 (unless I sprung for good aluminum heads). He has a flow bench and said he gets 275-280 on the intake side and 200 on the exhaust side after porting stock 360 heads. I also have a 6 pack set up to put on it and he will port match the intake to the heads. Should be a nasty little sob in my 2900 pound Barracuda, huh.