вот например вариант для 4.9
http://www.ebay.com/itm/Keith-Black-...4069a2&vxp=mtr
вот описалово
3.98" offset-ground stroker crank
Jeep 4.2L 5.875" rods
Small Block Chevy UEM-KB142 hypereutectic pistons
10.5:1 CR
Crane #753941 216/228 degree camshaft
Ported big valve 2.02"/1.60" cylinder head
Mill block deck 0.017"
Mopar/Victor 0.043" head gasket
0.053" quench height
Flometrics F&B 68mm billet TB
3.0" exhaust system
Ford 30lb/hr injectors with adjustable FPR or MAP adjuster for '87-'95 engines, Ford 30lb/hr injectors with stock 49psi FPR for '96 and later engines.
Custom PCM programming
300hp @ 5000rpm, 354lbft @ 3700rpm