Complex sentence: Both were available with IH's SV-345 engine or Chrysler's LA 318 (5.7 or 5.2 litres), the Safari was also offered with Chrysler's 7.2 litre "440 RB" engine and the Sahara could be had with Nissan's SD33 diesel engine.
Split into simpler sentences: Both were available with IH's SV-345 engine or Chrysler's LA 318 (5.7 or 5.2 litres). The Safari was also offered with Chrysler's 7.2 litre "440 RB" engine, while the lesser Sahara could be had with Nissan's SD33 diesel engine.