Leaf springs?

So im looking at replacing my leaf springs, they are shot. and sagging, So does anyone have recommendations?
For replacement springs, can recommend McVeigh (I used these on my 73 /6 Dart Custom), Espo (used on my Demon), or Eaton springs (also considered.).

i see mopar performance for a $104 a side but b body's does anyone have part numbers for a body?
Mopar listings: http://www.mopar.com/assets/pdf/performance/catalog/Steering_Suspension_&_Brakes.pdf

LEAF SPRINGS AND HARDWARE
A.​
XHD Leaf Springs - Original Equipment

These extra heavy-duty O.E. Leaf Springs are just like the bias design production
springs that were stock on 1968-72 A-Body vehicles with 340 high-performance
engines, 1967-71 B-Body vehicles with 440 or 426 manual and automatic
transmissions, and 1970-74 E-Body vehicles with 440 or 426 manual or
automatic transmissions. Springs will fit any A-Body (1968-72), B-Body (1966-72)
or E-Body (1970-74), regardless of engine size, and come with front bushings
installed in assembly. B-Body: front 22", rear 36". Select right or left spring.​
P4510269​
Leaf Spring, Left, O. E., 1964–75 A-Body

P4452983​
Leaf Spring, Left, O. E., 1966–72 B-Body

P4452985​
Leaf Spring, Left, O. E., 1970–74 E-Body

P4510268​
Leaf Spring, Right, O. E., 1964–75 A-Body

P4452982​
Leaf Spring, Right, O. E., 1966–72 B-Body

P4452984​
Leaf Spring, Right, O. E., 1970–74 E-Body

B.​
Competition Leaf Springs - Super Stock

Designed to control torque roll, providing equal bite on rear wheels through
limited axle windup. These springs don't lock up the rear, but allow it to move,
keeping the tires on the track where they belong. The rear springs listed below
have a 20-inch front segment and require a longer front spring hanger bracket for
B-, E-, F-, J- and M-Bodies (not included). Standard hanger brackets used on ABody.
When P3412002/03 is used on a "B" or "E" body frame, the rear spring
eye in the frame must be relocated forward; Pinion Snubber is recommended. If
using P4120863, vehicle will not be level at standstill.​
1​
P4120864 Leaf Spring, Competition, Left, 2,800 lbs. (A-Body)

1​
P3412003 Leaf Spring, Competition, Left, 3,000–3,200 lbs., Modified,
Hemi Super Stock A-Body, B-Body with Relocated Shackle

1​
P4120866 Leaf Spring, Competition, Left, 3,300 lbs., E-Body Barracuda-
Challenger, B-Body w/Shackle Relocation

1​
P3690457 Leaf Spring, Competition, Left, 3,400 lbs., 1964–65 Super
Stock B-Body

1​
P3690461 Leaf Spring, Competition, Left, 3,600 lbs., E-Body Barracuda-
Challenger, B-Body w/Shackle Relocation

1​
P3690455 Leaf Spring, Competition, Left, 3,800 lbs., B-Body

1​
P4120863 Leaf Spring, Competition, Right, 2,800 lbs., A-Body

1​
P3412002 Leaf Spring, Competition, Right, 3,000–3,200 lbs., Modified
Cars, 1968 Hemi Super Stock A-Body




does it make a difference between v8? and 6?
. There is not much difference between the /6 and the 2 bbl V-8 in springs. The HiPo 8s are a bit stiffer.

Don't know the intended use of the vehicle, so I'm unable to make a recommendation: