1970 Plymouth Barracuda Gran Coupe:
Believe it left the factory with a 2806030 – 1961-1974, 318 LA-series small-block
2466090 – 318 LA-series small-block
2468230 – 318 A-series small-block
2532630 – 318 A-series small-block
2536030 – 1967-75, 318 LA-series small-block
?????
Now has a 2536430 – 1966-1972, 440 RB-series big-block
VIN: BP23G0B391970 [6-70]
B - Basic Car Line. Barracuda Body Type
P - Trim Level or Price Class, Premium
23 - Body Type, Hardtop
G - Engine, 318ci two-barrel V8
0 - Year, 1970
B - Assembly Plant, Hamtramck, Michigan
391970 - Sequence Number
Body Plate: (#-page)
N85 R11 V5X YO5 EN1
G55 G34 L31 N21 M25 M31
FF4(23) A01(55) A04(55) A62(55) C16 C26
FF4(23) P6F8(38) 000 624 144192
E44 D31 [BP23(18) G08 391970 - VIN]
(18) Gran Coupe, Hardtop, V8 [13035]
#built-8183, Production
(23) Body Color Scheme, Lime Green Metallic
(38) Interior Trim Combinations
(55) Light Package, Basic Group, Accessory Groups
https://www.bing.com/search?q=1970+plymouth+barracuda+440+power+steering+pressure+hose&setmkt=en-US&PC=EMMX01&form=LBT003&scope=web
https://www.enginelabs.com/engine-tech/a-guide-to-mopar-v8-cylinder-head-and-block-casting-numbers/
https://www.forbbodiesonly.com/moparforum/threads/for-sale-440-rb-engine-block-casting-number-%E2%80%9C2536430-10%E2%80%9D-1966-1972.21339/
https://www.enginelabs.com/engine-tech/a-guide-to-mopar-v8-cylinder-head-and-block-casting-numbers/