quick question

[2much2learn]

MOPAR - Forged 4.00" stroke 318/340 main
Surface hardened, forged small block cranks feature radiused fillets at main and rod journals.
6-bolt flange - 4340 steel - 318/340 main
$895.95
MOP-P5007252

MOPAR - Forged 3.58" stroke 318/340 main
Surface hardened, forged small block cranks feature radiused fillets at main and rod journals.
6-bolt flange - 4340 steel - 318/340 main
$1,495.00
MOPP5007253

why is the 4.00" cheaper than the 3.58"? thought that the bigger stroke the better? , which is better? please inform me since im planing to stroke out my 340 

[Challenger340]

IMO,
The Cheaper 4" Arm, is a result of Mopars license with SCAT expiring, now Ma is attempting to pricematch with what you can buy it from them for ? also Mopar ain't stuck with stock, they order stock as req'd.

The 3.58" arms are "OLD" dead stock, they just ain't figured out they can't sell yet. Eventually, they'll figure it out and dump them.