Yep, got a grade 4 as a trial roll and had planned to try grade 5 but the grade 4 was so good I didn't feel I needed to (I was going to come back to reroll grade 5 at some point but forgot ).
It got me to nearly 40lyr jumps in bubble configuration with fuel but no cargo. With a few more mods onboard like clean drives, lightweight mounts (not great rolls) and switching to my slightly armed explorer build I have a theoretical max of something like 44, but that's down to 36 with fuel and full cargo.
Also picked up low grade mods for distributor (engine focused), power plant (low emissions) and various resistance shield boosters. Meant to pick up a shield generator one but ran out of time and I wasn't sure I wanted the trade offs in strength that reducing the mass would likely give me. End result isn't perfect, but I've got a very cool running ship with good jump range and speed, just about right for an explorer