So I sent an email to Carl at carsbycarl.com and he said I should go for the Street Brawler kit:
Street Brawler Stroker Kit $1449.00
-Your choice of 521+ or 545+ cubic inch displacement
-Nodular iron crankshaft
---Internal balance design on 4.15" stroke crank
---External balance design on 4.3" and 4.5" cranks
-Scat 4340 forged I-beam rods with ARP bolts
-Probe forged pistons (flat top or dish)
---26cc dish with 4.300 stroke 521+ CID
---22cc dish with 4.500 stroke 545+ CID
-Piston rings matched to pistons
-King main bearings
-King rod bearings
-Suggested for applications of up to 650 Horsepower and 7000 RPM
-Custom options available.
Street Brawler Stroker Kit $1449.00
-Your choice of 521+ or 545+ cubic inch displacement
-Nodular iron crankshaft
---Internal balance design on 4.15" stroke crank
---External balance design on 4.3" and 4.5" cranks
-Scat 4340 forged I-beam rods with ARP bolts
-Probe forged pistons (flat top or dish)
---26cc dish with 4.300 stroke 521+ CID
---22cc dish with 4.500 stroke 545+ CID
-Piston rings matched to pistons
-King main bearings
-King rod bearings
-Suggested for applications of up to 650 Horsepower and 7000 RPM
-Custom options available.