350 or bigger?

What's up guys? I have a 67 Impala with a GM Targetmaster 350 with Gen I heads on it. I just need to know what would be the best direction to go in. I'm just trying to build a nice street rod that really moves. I have a guy that wants to turn it into a 383 for 3 grand but I'm not sure if it's actually needed. Any advice that you can give me would be greatly appreciated.  

67 Impalas are pretty cool but heavy. A 383 is a good choice and there are a lot of builds already done in Chevy Hi performance you can read about complete with parts needed and costs and how much power they produce. A heavier car like an Impala could use the extra torque of a 383. A stroker kit and a set of good aftermarket heads will really wake up that motor. good luck.  

$3000 for building a 383 seems a bit high. You can get 383 stroker kits for $600-700 that include crank, rods, pistons, bearings, everything else needed for the bottom end rebuild.  

I thought so too. Where can I purchase the kit from?  

Here is a list of articles with some 383 builds that should help you out.
http://www.chevyhiperformance.com/tech/chevy_engines_drivetrain/short_block/index.html
One of the kits they do use is from Brodix.  

About as good as it gets for the money

http://www.jegs.com/p/Eagle/Eagle-Street-and-Strip-Rotating-Assembly/749647/10002/-1
$949.00
383ci Rotating Assembly
Not for 1992-97 LT1/LT4
1-piece rear main seal
4.030'' bore x 3.750'' stroke
5.700'' rod length
-18cc inverted dome pistons
Comp Ratios
10.3:1 with 58cc
9.7:1 with 64cc
8.7:1 with 76cc  

That's what I needed to know. Thanks.  

The block has cracks in it. Is it worth salvaging?